"Normal weight obesity appears to be highly prevalent," Lopez-Jimenez noted, "constituting more than half of the patients with a normal weight as defined by the BMI." Of the total 2,127 subjects in the study, 1,321 had normal weight obesity, while 806 had a normal body fat content.

If 1 in 3 people are clinically overweight/obese according to their BMI and half of all people who are a normal/healthy weight according to their BMI's are carrying so much fat they're also obese I can't help wondering what the true figure for the number of people who are overweight/obese might be; half the population perhaps?